\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Study 2 Summary Statistics \label{immigrationphonedemos}}
\begin{tabular}{l*{1}{cc}}
\hline\hline
                    &\multicolumn{2}{c}{}     \\
                    &        mean&          sd\\
\hline
Age                 &       20.96&        3.44\\
Female              &        0.70&        0.47\\
Latino              &        0.39&        0.50\\
Immigrant           &        0.48&        0.51\\
Very Liberal        &        0.30&        0.47\\
Liberal             &        0.43&        0.51\\
Moderate            &        0.26&        0.45\\
Conservative        &        0.00&        0.00\\
Very Conservative   &        0.00&        0.00\\
Prior Campaign Experience&        0.57&        0.51\\
Prior Perspective-Getting Experience&        0.35&        0.49\\
\hline
Observations        &          23&            \\
\hline\hline
\end{tabular}
\end{table}
